Added Mobx to the documentation (facebook#439)

sarath263 · charpeni · commit 57710fb0f746 · 2018-06-29T11:38:51.000-04:00
Since Mobx is also very Popular and gaining popularity of it's Reactive way, Requesting Mobx should also needed to be added to the React native docs.
diff --git a/docs/state.md b/docs/state.md
@@ -51,7 +51,7 @@ export default class BlinkApp extends Component {
 AppRegistry.registerComponent('AwesomeProject', () => BlinkApp);
 ```
 
-In a real application, you probably won't be setting state with a timer. You might set state when you have new data arrived from the server, or from user input. You can also use a state container like [Redux](https://redux.js.org/) to control your data flow. In that case you would use Redux to modify your state rather than calling `setState` directly.
+In a real application, you probably won't be setting state with a timer. You might set state when you have new data arrived from the server, or from user input. You can also use a state container like [Redux](https://redux.js.org/) or [Mobx](https://mobx.js.org/) to control your data flow. In that case you would use Redux or Mobx to modify your state rather than calling `setState` directly.
 
 When setState is called, BlinkApp will re-render its Component. By calling setState within the Timer, the component will re-render every time the Timer ticks.
 
